I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
wail weal waul wily wale wawl wall will wile waly walla willy whale while wally wheal willie willow wallie wallow waylay wallah willowy weel well wool welly wheel whole wooly
ail bail fail vail hail jail kail quail mail nail pail rail sail tail wail al